Oil-burner.



'Patented June 28, 1910.

R. C.v USAD.

OIL BURNER.

APPLICATION FILED APB. 2,1909.

IW l jll'lmllnnul'l'" ANDREW s GRAHAM ce.. FNoTL-LlnmamwhEns` WASMNGTON,L. c

ROLAND C. CASAD, OF COVINA, CALIFORNIA.

OIL-BURNER.

Specification of Letters Patent.

Patented June as,A 1910.

Application led April 2, 1909. Serial No. 487,588.

To all 'whom t may concern:

Be it known that I, ROLAND C. CAsAD, a citizen of the United States,residing at Covina, in the county of Los Angeles and State ofCalifornia, have invented a new and useful Oil-Burner, of which thefollowing is a specication.

The main object of the present invention is to provide an oil burnerwhich will burn the oil in the most eflicient and economical manner witha flame of extremely high temperature and with substantially noproduction of soot.

The invention is specially applicable to oil burners for use inconnection with stoves and is of the type wherein an intercepting plateis placed across the grate space of the re box and a natural draft isproduced by the ordinary chimney connections of the stove through atubular member communicating with the space below and above saidintercepting plate, the nozzle of the oil burner being located at ornear the outlet of this tubular member.

A further object of the invention in connection with such a burner is toprovide for minimizing or eliminating the obstruction to the draft dueto the presence of the burner nozzle in this tubular passage.

A further object of the invention in this connection is to insure thatthe oil vapor is mixed with air before combustion so that the combustionis of a mixture of vapor and air7 giving a smokeless flame indistinction to unmixed oil vapor burning alone, which would burn with asmoky flame.

The accompanying drawings illustrate the invention and referringthereto: Figure l is a perspective of the burner. Fig. 2 is a verticalsection thereof. Fig. 3 is a horizontal section on the line :n3 :r3 inFig. 2.

1 designates the intercepting plate which is placed at the bottom of thefire pot or in the grate space of an ordinary stove in the usual mannerin such devices. Said plate is provided with an opening or perforation 2and at one side of said perforation with a lug 3. A tubular member 4rests on the plate 1 and is secured thereon by engagement of its iiange5 under the lug 3, the bore of the tubular member 4 registering with theopening 2 of the plate 1. Said tubular member 4 is formed as an invertedU or double elbow having an upward ingress passage communicating withthe opening 2 and a semicircular bend extending from the top of thisvertical portion and bending over and down to the outlet portion 4 whichis directed downwardly and is situated a short distance above the platel. Said plate 1 is further provided with a wall 6 extending upwardlytherefrom to a height a little below the level of the bottom of theoutlet 4, the space within this wall serving as a mixture and combustionchamber. Centrally within the wall 6 the member 1 is provided with anupwardly extending tubular post 7 whose upper end may be substantiallyon a.

level with the bottom of the outlet member 4 of the tubular member 4. Anipple 8 is secured into this tubular member 7 and a pipe 9 connected tosaid nipple 8 by a fitting 10 serves to supply water or air.

The oil supply means 11 consists of a pipe connected to any suitablesource of oil supply and provided with a valve 12 and a pipe 13connected to said pipe 11 and extending upwardly within the tubularmember 7 and provided at its upper end with a head 14 formed as a screwdisk screwing onto the pipe 13 and having a recess 14 in its top servingas an oil cup, and an annular recess 15 in its bottom extending over thetop of the tubular member 7 to form an annular discharge slot for air orother fluid between the top of the member 7 and the bottom of member 14.The outer edge or rim of member 14 forms up-turned and down-turnedflanges 16, 17 serving respec-A tively as a lip over which the oil flowsand as a deflector for the current of air issuing from the tubularmember 7.

The pipe 9 may be open to receive atmospheric air or it may lead to anysuitable source of water supply, for example, an ordinary service pipesupplying water under pressure. The head 14 is of larger diameter thanthe tubular member 7 and of less diameter than the air outlet of thetubularv member 4, and the outer flange or wall 6 is of larger diameterthan said air outlet.

The operation is as follows: The oil which may, for example bedistillate or other hydro carbon, is supplied through pipe 11, turned onat valve 12 and is lighted at the outlet where it flows over the lip ofthe oil cup 14. As soon as the stove becomes warm the resulting draftfrom the chimney draws air through the tubular member 4, as indicated bythe arrows, and causes a strong' draft around the head 14 tending tovaporize the oil and mix it with the air. This draft in conjunction withthe obstruction produced by the head 14 produces a condition of suctiondirectly beneath said head and unless means are provided for relievingthis condition it is found that the oil produces a yellow llame.Assuming that the tubular member 7 1s open to communication with the airbelow the plate member 1, air will iow upwardly through this tubularmember and outwardly over the top of this tubular member and below thedeflector 14, thus relieving the condition of suction at this point andallowing the flame to expand freely under the natural draft, the flamethen passing over the wall G of the combustion chamber in a circularsheet or jet having maximum velocity and giving a white flame ofextremely high temperature and substantially without smoke. It will beunderstood that in case air is admitted as stated the supply of air tothe underside of the flame is also of advantage in promoting combustion.

Another important advantage of admission of fluid through the tubularmember 7 back of or below the obstruction 14 is that it serves to keepthe oil pipe 13 and head 14 cool and by its contact with these parts andwith the oil and oil vapor insures that the oil vapor will be mixed withthe air to form a smokeless burning mixture before it reaches thetemperature for ignition. That this is an important feature of theoperation is shown by the fact that equally ehicient results areobtained when the tubular member 7 is connected to the water supply asby means of pipe 9. In that case the water is turned on in limitedamount, so that the head of the tubular member .7 and adjacent partsconvert the water into steam before it reaches the outlet at the top oftubular member 7, the resulting expansive fluid serving to relieve thecondition of suction at the bottom of member 14 and also to prevent theparts from becoming overheated to an extent sufficient to cause the oilburner to burn as such before its admixture with the air.

What I claim is:

1. An oil burner comprising a plate formed with two openings, a benttubular member having one end communicating with one of said openings toreceive air from beneath the plate and having the other end directeddownwardly above the plate to form an air outlet, an oil supply pipeextending through the other of said openings in the plate, a headfo-rmed with an oil cup at the upper end of said oil supply pipe andcommunicating therewith, said head extending within said air outlet andbeing. of greater diameter than said oil supply pipe, and a secondtubular member surroimding said oil supply pipe and extending beneathsaid oil cup, said second tubular member communicating with said otheropening in the said plate to receive elastic iiuid therethrough, wherebysaid elastic fluid is directed at the inside of the oil or vapor passingfrom the oil cup and the air from the aforesaid airv outlet is directedat the outside of said vapor.

2. An oil burner comprising a plate formed with two openings, a benttubular member having one end communicating with one of said openings toreceive air from beneath the plate and having the other end directeddownwardly above the plate to form an air outlet, an oil supply pipeextending through the other of said openings in the plate, a head formedwith an oil cup at the upper end of said oil supply pipe andcommunicating therewith, said head extending within said air outlet andbeing of greater diameter than said oil supply pipe, a second tubularmember surrounding said oil supply pipe and extending beneath said oilcup, said second tubular member connnunieating with said other openingin the said plate to receive elastic fluid therethrough,

whereby said elastic Huid is directed at theA inside of the oil or vaporpassing from the oil cup and the air from the aforesaid air outlet isdirected at the outside of said vapor, and a wall extending upwardlyfrom said plate around the aforesaid tubular member, said wall being ofgreater diameter than the' aforesaid air outlet.

3. An oil burner comprising a plate formed with two openings, a benttubular member having one end communicating with one of said openings toreceive air from beneath the plate and having the other end directeddownwardly above the plate to form an air outlet, an oil supply pipeextending through the other of said openings in the plate, a head formedwith an oil cup at the upper end of said oil supply pipe andcommunicating therewith, said head extending within said air outlet andbeing of greater diameter than said oil supply pipe, a second tubularmember surrounding said oil supply pipe and extending beneath said oilcup, said second tubular member communieating with said otherl openingin the said plate to receive elastic fluid therethrough, whereby saidelastic fluid is directed at the inside of the oil or vapor passing fromthe oil cup and the air from the aforesaidfair outlet is directed at theoutside of said vapor, and means for supplying Water to the my hand atLos Angeles, California, this aforesaid tubulzfumember to produce team26th day of March 1909. at the outlet o said member, said 0i cup havingan annular recess in its bottom eX- ROLAND C' CASAD 5 tending over thetop of said second tubular In presence ofmember to form an annulardischarge slot. F. M. TOWNSEND,

In testimony whereof, I have hereunto set W. LARGE.

